Rebuild kernel also if the running kernel was build somewhere else.

Machine.pm

@@ -203,7 +203,7 @@ sub update_ports {
 
 sub make_kernel {
     my $version = $sysctl{'kern.version'};
-    $version =~ m{:(?:/usr/src)?/sys/([\w./]+)$}m
+    $version =~ m{:[\w/]*/sys/(arch/\w+/compile/GENERIC[\w./]*)$}m
 	or die "No kernel path in version: $version";
     my $path = $1;
     my $ncpu = $sysctl{'hw.ncpuonline'};